Dust-guard for car-windows.



UNITED STATES PATENT OFFICE.

HARRY I-I. SCI-IROYER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE ACME SUPPLY COMPANY, A CORPORATION OF ILLINOIS.

DUST-GUARD FOR OAR-VIINDOWS.

masses.

Application filed July 12, 1911.

b all whom it may concern Be it known that I, HARRY H. ScHnoYnR, a citizen of the United States, and a resident of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in.

Dust-Guards for Car-l/Vindows; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the numbers of reference marked thereon, which form a part of this specification.

Dust in considerable quantities is drawn beneath car windows, especially when the car is in motion. Movement of the car seems to produce an inward pressure in some instances, which assists in carrying the dust inwardly beneath the window sash.

The object of this invention is to afiord a dust guard which effectually seals the sash against the admission of dust between the same and sill, and which also acts to produce an outward draft from the bottom of the sash.

It is also an object of the invention to afford a construction in which dust or dirt is prevented from accumulating upon the sill, and in which the dirt or dust as it falls, is promptly removed by the draft occasioned by the movement of the car.

It is also an object of the invention to afford a construction which acts to wedgingly engage the bottom of the sash to spring the same inwardly into positive engagement with the sub-sill on the inner side of the frame, and also to utilize the draft occasioned by the movement of the vehicle to produce a direct outward draft from the bottom of the sash to withdraw the dirt and dust therefrom.

The invention consists in the matters hereinafter described and more fully pointed out and defined in the appended claims.

In the drawings: Figure 1 is a fragmentary. horizontal section of a window equipped with a device embodying my invention, and showing the latter in top plan view and also in horizontal section. Fig. 2 is a vertical section taken through the sash and the guard. Fig. 3 is an enlarged inverted plan view of a portion of the dust guard. Fig. t is a section on line fl.-4 of Fig. 3.

As shown in the drawings: 1, indicates Specification of Letters Patent.

Patented Feb. 2, 1915.

Serial No. 638,204.

the sill of the window frame; 2, the sub or interior sill, against the outer upper edge of which the bottom rail 3, 0f the sash bears, as shown in Fig. 2.

4, indicates the parting strip or stop on the inner side of the sash. The inner face of the sash bears, of course, at its side rails against the stop 4, and the inner face of the bottom rail bears against the upwardly proecting outer edge of the inner or sub-sill 2, as shown in Fig. 2. As shown also, the outer face at the lower edge of the bottom rail 3 of the sash, is chamfered or beveled under to serve as a wedge member.

Secured on the sill 1, is the dust guard embodying my invention. This, as shown, comprises a main plate 5, of metal or other suitable material having one side thereof turned or flanged over to afford a longitudinal rib 6, of double thickness to bear against the bottom rail of the sash, as shown in Figs. 1 and 2. Rigidly secured on said plate or web 5, on the under side thereof, by riveting or any suitable means, are deflecting members. These, as shown, (though not necessarily) are constructed of stamped or pressed metal and comprise a succession of duplicate units arranged at short intervals apart, and which, by their shape, serve to cause an outward flow of air from the sill. In construction, said members comprise plates 7 arranged at an angle with each other, and, as shown, integral in pairs, and which are secured to the web 5, with the apeX of the angle formed thereby directed against the inturned edge of the plate, and consequently toward the bottom rail of the sash, and spaced a distance therefrom, dependent onlv upon the width of the rib or web 6 itself. Said angle plates are provided with inturned ends 8, and secured thereto and bearing against said inturned angular ends 8, is a concave plate 9, the ends of which extend bevond said angular ends and to the edge of the plate or web 5. Said deflecting members are secured on said web at short (but equal) intervals apart to afford a relatively narrow space therebetween. The dust deflector is secured on the sill 1, with the plate 5, uppermost, as shown in Figs. 2 and 4, and affording the too of the device.

The operation is as follows: lVhen the window sash is closed, the outer face thereof engages against the rib or web 6, and acts to force the bottom of the sash inwardlytoseal the same against-the outer edge of the sub or inner sill 2. Thisin itself tends to greatly reduce the amount of dust that can find entrance into the car, inasmuch as it tends to prevent dust from passing into thecar beneath the window, and, ofcourse,

most of the dust and dirt projected against,

the window by the wind or air movement occasioned by the passage of the train, falls upon the plate 5, andthenceis discharged therefrom outwardly. Should any .portion 0f thedust, however, find itsway beneath the plate 5 and 6, the ai r impinging on the concave or 'curvedplates 9, is deflectedout wardly from-the car by the curvature-there of, and in consequence, the a1r beneath said =plate adjacent the sash is agitated and'eX- hausted or is drawn outwardly. Of course, this is assisted by the inclined sides of the deflector, inasmuch-as the dust. and dirt particles more readily slide, or are drawn down the inclined surface of the sill and are thence discharged into the narrow space between the. adjacent ends of the deflector plates 9, and at a point where evena slight tendency tov outward flow of the air be:

neath said plate, acts to discharge thedust Of course, should it be tated the prior art, for I have shown butv one (and that a preferred) form of the in? vention, and: am aware that numerous de-. tails of construction may be varied-without departingfrom the principles ofthe invention.

I claim as my invention:

1. A dust guard. for car windows, comprising a main plateadaptedto contact with the outer face ofthe window sash when.the, latter is closed, angle plates secured to the. underside of sald mam plate and having their converging ends disposed toward the window sash, and a deflectinganember secured to the 'cther ends of said angle plates.

2. A dust guard for ca-r'windows, comprising al platehavingone edge thereof folded over to afford a longitudinal rib,

angle platessecured thereon with the apex; of the angle formed thereby directed toward the new the first-mentioned plate, and a deflecting member secured to the ends of the angle plates opposite the apex.

3. A dust guard for. car windows, comprising a' main plate having one edge thereofjbeaded over upon itself to provide a rib adapted to contact with the outer face of the window sashwhen the latter is closed,

and a plurality of groups of members de: pend ng therefrom and each comprising angled walls and a-curved wall. coacting with saidangled walls to cause a flow of air.

toward the tips of'said curved wall as the car moves. I 7

4. A dust guard for car windows, comprising a flatmain plate, an angle deflecting plate depending from the under surface of said main plate, and a curvedwall joiningthe extremities of said angle plate and projecting beyond'the same.

5. A dust guard for car windows, comprising a successionof triangular'members secured on the s1ll1n close relation with the bottom sash rail and with one vertex ofeach. dn'ected toward said rail, a concave SldfiOIl' each triangular member opposite said vertex K and acting as a deflector to exhaust-the air from between said members, and a cover plate for said members having a projecting edge thereon actlng to bear against'the sash, 6. In a device of the class described,

adapted to utilize acurrent of air flowing past one edge to cause a flow from the opposite edge thereto, comprising a flat plate, a plurality of depending plates converging in pairs and-a curved plate joining the ex tremities of each pairof converging plates.

In testimony whereof Ihave hereunto subscribed my name in the presence of two sub-- scribing witnesses.

HARRY I-I. SGHROYER, WVitnesses:

LAWRENCE .REIBSTEIN, GEORGE, E.- ll/LOORE Copies of this patent may be obtained for five cents each, by addressing the Commissioner-ofPatents,

Washington, D. C. 

